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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        //去重
        let arr = [1, 2, 2, 3, 4, 5, 6, 6];
        function removeSame(arr) {
            let newArr = [];
            for (let i = 0; i < arr.length; i++) {
                if (arr[i] != arr[i - 1]) {
                    newArr.push(arr[i]);
                }
            }
            console.log(newArr);
        };
        removeSame(arr);
    </script>
</body>

</html>